Kant's response to ‘Hume's problem’ in his analysis of the a priori structure of causality as law-governed succession in the Second Analogy of Experience has unquestionably overshadowed the account of simultaneity (Zugleichsein), which follows in the Third Analogy. The analysis of simultaneity in the first Critique relies entirely upon that of succession and is ultimately no more than a more complicated variant of the causal dependence of substances: two objects are experienced as simultaneous only when each of those objects (...) grounds some determination of the other, that is when they are reciprocally determined in dynamic community. By investigating Kant's remark in the third Critique that the experience of the sublime “makes simultaneity intuitable” this paper develops a Kantian analysis of simultaneity that is irreducible to the more prominent analysis of causal succession. This more robust account of simultaneity is then seen to play an essential role in the constitution of the objects of perception (and not only the regulation of their relations) as thematized in the Axioms of Intuition in the Critique of Pure Reason. (shrink)

The phenomenology of a priori intuition is explored at length (where a priori intuition is taken to be not a form of belief but rather a form of seeming, specifically intellectual as opposed to sensory seeming). Various reductive accounts of intuition are criticized, and Humean empiricism (which, unlike radical empiricism, does admit analyticity intuitions as evidence) is shown to be epistemically self-defeating. This paper also recapitulates the defense of the thesis of the Autonomy and Authority (...) of Philosophy given in the author’s “A Priori Knowledge and the Scope of Philosophy” (Philosophical Studies, 1996). (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Colin Falck STRUCTURE AND INTUITION I KANT'S ANSWER, in his Critique ofPure Reason, to the Humean problem that there seemed to be no way of explaining the principle of our experiential unity, of what it is that holds us together as experiencing selves or consciousnesses, was to argue that it was language itselfwhich underlay the whole possibility of our self-consciousness and of our consciousness of a world of (...) objects around us. Experience would not be possible without a unified consciousness, and a unified consciousness is only possible for us because of the use which we make of certain concepts of"the objects of experience." ' Kant argues at some length that there can be no perceptual experience without conceptual language, and in particular without our use of what he calls the a priori "categories" or "pure concepts of understanding " (CPR, B. 102 et seq.). (A similar, but more sophisticated, argument about the necessary dependence of perceptual experience on conceptual language was developed later by Wittgenstein.) Saussure, in his Course in General Linguistics,2 though never it seems in a fully aware or explicit way, founds his entire argument on this Kantian conclusion when he remarks that the notion "that ready-made ideas exist before words" is "open to criticism at several points" (p. 65), and goes on to elaborate a view of linguistic meanings as based in the relationships which hold between linguistic terms or units themselves rather than in any kind of "namingprocess " or "correspondence" between individual words and the things that they name (pp. 65, 111-18). A difficulty which faces, and which (unless certain amendments are made) must ultimately invalidate, the account of experience and language which Kant sets out in the Critique of Pure Reason is that the Kantian experiencing self, even though it is a concept-using and therefore perhaps 184 Colin Falck185 logically plausible subject, is at the same time also a disembodied subject. To that extent it is open to some of the same objections that can be brought against Descartes's conception of the thinking subject, or ego, as the foundation of all our experiencing. The problem which Kant did not recognize is that there could be no way for us to know about the existence of other experiencing agents, or therefore to have any awareness of the distinction between ourselves and other selves, if we could not in fact see the putative other person as an experiencing and thinking consciousness. To see another person in this way it must be possible to see him as, and it must be essential to his identity that he should really be, an embodied consciousness, rather than merely a Cartesian disembodied ego or (since the same arguments must apply) a Kantian disembodied concept-using self. (Without being embodied or located, there is no way for the Kantian self to be a perceiving agent with an identity which endures through time: the mere "unity of self-consciousness" which Kant offers us does not in fact give us any solution to Hume's problem at all.) The body, we might say, is that realm in which, or through which, we have our contact with, and therefore our awareness of, other consciousnesses — and at the same time, by contrast, our awareness of our own selfhood or consciousness as well.3 We cannot see another person only as "external" behavior, but must necessarily see his behavior as already inhabited by mind or spirit. Were this not so, there would be no way, to use the Kantian or "transcendental" turn of argument, for us to have the kind of experience which we indisputably do have. Ultimately therefore, if we reflect on the deficiencies of the Kantian position in the "disembodied" form in which Kant himself sets it out, we shall be obliged to recognize that the only kind of concept which will make the required connections between the "inside" and the "outside" of human behavior — a logical gap which seems all too easily to open up beneath us in this area — will be some kind of concept oí sympathy, or of preconscious imitative identification, which, by bridging the divide between "internally experienced" consciousness and "externally observable" movement, makes it... (shrink)

This paper examines two attempts to justify the way in which intuitions about specific cases are used as evidence for and against philosophical theories. According to the concept model, intuitions about cases are trustworthy applications of one’s typically tacit grasp of certain concepts. We argue that regardless of whether externalist or internalist accounts of conceptual content are correct, the concept model flounders. The second justification rests on the less familiar belief model, which has it that intuitions in philosophy derive from (...) one’s beliefs. Although more promising than the concept model, the belief model fails to justify traditional philosophical use of intuitions because it is not clear a priori that the beliefs at issue are true. The latter model may, however, legitimize a less a prioristic approach to intuitions. (shrink)

In Devitt’s view, linguistic intuitions are opinions about linguistic production of products, most often one’s own. They result frorn ordinary empirical investigation, so “they are immediate and fairly unreflectiveernpirical central-processor responses to linguistic phenomena”, which reactions are, moreover, theory-laden, where the ‘theory’ encompasses all sorts of speaker’s beliefs. The paper reconstructs his arguments, places his view on a map of alternative approaches to intuitions, and offers a defense of a minimalistic “voice-of-competence” view. First, intuitions are to be identified with the (...) data, the minimal “products” of tentative linguistic production of naïve speaker-listeners, and not with their opinions about the data. Second, the data involve no theory and very little prototheory. Third, although there might be admixtures of guesswork in the conscious production of data, these are routinely weaned out by linguists. Finally, mere acceptance of the “voice of competence” does not land us in any objectionable Cartesianism: it is cornpatible with naturalism and with distrust of a priori philosophy. (shrink)

This chapter assumes that intuitions must play a central role in explaining a priori justification and looks at the conditions under which they would be able to do so. It argues that if an appeal to intuitions is to help, they must provide epistemological resources that go beyond those provided by explanations in terms of epistemological analyticity (appeals to conceptual understanding). Accounts, like Ernest Sosa’s, which reduce intuitions to attractions to assent, and which give the understanding an indispensable role (...) in explaining the justificatory powers of such attractions, are unable to provide such a resource. As a result, such accounts must be rejected. Towards the end of the chapter, an alternative account of these issues is briefly presented, one that seems to the author to hold greater promise. (shrink)

This paper provides a comprehensive critique of Poincaré’s usage of the term intuition in his defence of the foundations of pure mathematics and science. Kant’s notions of sensibility and a priori form and Parsons’s theory of quasi-concrete objects are used to impute rigour into Poincaré’s interpretation of intuition. In turn, Poincaré’s portrayal of sensible intuition as a special kind of intuition that tolerates the senses and imagination is rejected. In its place, a more harmonized account (...) of how we perceive concrete objects is offered whereby intuitive knowledge is consistently a priori whatever the domain of application.Keywords: Immanuel Kant; Charles Parsons; Henri Poincaré; Quasi-concrete object; Sensible intuition; Sensibility. (shrink)

I sketch a novel reading of the B-Deduction, Kant’s argument aimed at establishing the objectivity of the categories. I argue that this requires both that they purport to be about objects and do so successfully. The objectivity of the categories consists in their purported and successful representation of objects of experience, as contrasted with their failure to even represent anything and with their representation of something that does not exist or not as represented. This is why the deduction of the (...) categories consists of two main steps. In §§15–20, their objective purport is established by arguing that “[a]ll sensible intuitions stand under the categories“ (B143). In §§21–27, their objective success is established by arguing for their “validity a priori in regard to all objects of our senses” (B145). To understand why §20 concludes only the first of two steps of the argument, one has to recognize that it makes a claim about sensible intuitions and not yet about their objects. (shrink)

This paper explores the notion that children have a knowledge of the world of their own – an intuitive knowledge. Being fully immersed in the world as adults are, they too have a knowledge of the world. In contrast to adults, who have developed a cognitive knowledge of the world, children still depend on their intuitive knowledge. Children certainly have a strong grasp of the world they live in; it’s just not dependent on cognitive knowledge. In my paper I compare (...) and contrast Kohlberg and Lipman’s views on children’s ability to be natural philosophers. To be immersed in the world, brings to mind Martin Buber’s idea that we are born in relation, the a priori of relation, which only later develops into the essential relation as we develop the consciousness of our individual separateness. This a priori relation, then, forms the basis for children’s intuitive knowledge, and which is expressed through the language of imagination. And certainly, imagination is not devoid of any kind of reason. In focusing strictly on children’s cognitive development and ignoring their inborn relation with the world, we essentially rob them of their foothold in the world, their inner authority needed for self-regulated thinking. We create a world where children grow up dependent on authority, status, trends and fads. This can lead to what we’ve observed in the famous Milgram study. Philosophy with children encourages children to speak from their own place, in a form of parrhesia, if you will, and to discuss together with others the complexities of ideas. It honors their inborn relation with the world, their statements and aids in the process of developing their cognitive knowledge out of their intuitive grasp of the world. In respecting their inborn relation, philosophy with children allows children to grow up as full human beings, not just as smart and educated “disembodied creatures.” Children speak from the logic of experience (Foucault). Through the process of putting thinking itself into question, children become aware of themselves as thinking beings. It is what Bohm refers to as the “proprioception of thought,” the ability to “observe thought.” Philosophers, I argue, are experts in not knowing. In practicing the art of philosophy, the art of not knowing, we need each other to think together to explore deeper concepts. This binds us and allows us to explore the unknown with joy, curiosity and confidence. In an example from my own experience, I show that children not only intuitively touch on complex philosophical ideas; students are wrestling with ideas about how to understand the world, which is where philosophy began as well. How can we be surprised when children decide computer games are more interesting than life itself, if we have essentially robbed them of the desire to “get dirty,” and engage this world filled with wonder. We have created a world too boring and act surprised when children are bored. The world isn’t boring and in “doing” philosophy with children we keep the fascination with this place we call earth alive. (shrink)

Recent work in philosophical methodology by experimental philosophers has brought to light a certain kind of skepticism about the role of intuitions in a priori philosophical inquiry. In this paper I turn attention away from a priori philosophical inquiry and on to the role of intuition in experimental design. I argue that even if we have reason to be skeptical about the role of intuition in a priori philosophical inquiry, we cannot remove intuition from (...) inquiry altogether, because appeals to intuition are essential for experimental design. (shrink)

Pierre Saint-Germier | : Nous discutons la thèse, acceptée par de nombreux théoriciens des intuitions rationnelles, selon laquelle ces dernières s’accompagnent d’une apparence de nécessité. L’existence d’intuitions rationnelles ayant pour objet des propositions contingentes jette un doute sur l’adéquation de cette thèse. Le problème peut trouver une solution dans le cadre d’une théorie faillibiliste des intuitions rationnelles, pourvu que l’on admette des illusions modales inéliminables. En nous appuyant sur une explication bidimensionnelle de l’a priori contingent, nous défendons une solution (...) différente consistant à reconsidérer le contenu des apparences associées aux intuitions rationnelles : ce que l’on pourrait prendre pour des apparences de nécessité n’est autre qu’une manifestation de leur caractère a priori. | : We discuss the view, accepted by many rational intuition theorists, that rational intuitions involve appearances of necessity. The fact that we can have rational intuitions of contingent propositions casts a doubt on the adequacy of this view. This fact can be accommodated by a fallibilist theory of rational intuitions, provided one accepts that these intuitions generate ineliminable modal illusions. Drawing on two-dimensional explanations of the contingent a priori, we defend an alternative view according to which the appearances involved in rational intuitions are not appearances of necessity but rather an expression of their a priori status. (shrink)

Advocates of the use of intuitions in philosophy argue that they are treated as evidence because they are evidential. Their opponents agree that they are treated as evidence, but argue that they should not be so used, since they are the wrong kinds of things. In contrast to both, we argue that, despite appearances, intuitions are not treated as evidence in philosophy whether or not they should be. Our positive account is that intuitions are a subclass of inclinations to believe. (...) Our thesis explains why intuitions play a role in persuasion and inquiry, without conceding that they are evidential. The account also makes predictions about the structure of intuitions that are confirmed by independent arguments. (shrink)

Claims concerning what is or is not possible abound in contemporary philosophy. The epistemology of such claims, however, remains largely unexplored. Anything imaginable is possible, we are told, with the proviso that imagination be governed by logic. Many who defend this methodology argue that logic frees us from recourse to some mysterious a priori faculty of intuition. Anything is possible so long as it does not contain a contradiction—and we don’t need intuition to tell us what is (...) contradictory, just logic. Logic is thus supposed to provide us with a non-mysterious, intuition-free, modal epistemology. The purpose of this paper is to argue that logic does not deliver on this promise. The argument proceeds along two fronts. First, I argue that logic is not sufficient for the task. Not only are there consistent but impossible propositions, there are even inconsistent propositions that are possible. Second, and more fundamentally, I question the epistemic independence of appeals to logical consistency. I will argue that in judging a proposition to be consistent we rely upon our intuitions concerning what is possible. In other words, our modal beliefs undergird our judgments about consistency and not vice-versa. (shrink)

Though logical positivism is part of Kant's complex legacy, positivists rejected both Kant's theory of intuition and his classification of mathematical knowledge as synthetic a priori. This paper considers some lingering defenses of intuition in mathematics during the early part of the twentieth century, as logical positivism was born. In particular, it focuses on the difficult and changing views of Hermann Weyl about the proper role of intuition in mathematics. I argue that it was not (...) class='Hi'>intuition in general, but his commitment to twodifferent types of intuition, which explains his rather unusual and tormented philosophy of the mathematical continuum. I would like to thank Geoff Gorham, David McCarty, and Rosamond Rodman for reading an earlier draft of this work. I should also thank those who provided helpful comments on several distant ancestors of this paper: Emily Carson, Ulrich Majer, Erhard Scholz, John Schuerman, Stewart Shapiro, and Richard Tieszen. I am indebted to two anonymous referees for pointing out some problems and for pointing me to work on Weyl I did not previously know about. In particular, the recent articles in [Feist, 2004a] turned out to be (somewhat uncomfortably) relevant to the focus of this paper. In this last revision I have tried to show where I agree and disagree with the authors of those papers; I apologize for whatever repetition still exists, but it was tere before I read those papers. This paper has a long history, and comes out of several talks I gave some years ago. Audiences at the Center for Philosophy of Science, University of Pittsburgh (colloquium 1995), St Andrews University Philosophy of Mathematics Workshop (1996), the British Society for the History of Mathematics meeting (1996), the University of Mainz Mathematics Department (colloquium 1996), the Canadian Philosophical Association (1997 and 1999), and the University of British Columbia (colloquium 1998) should be thanked for their helpful comments. I also thank Neil Tennant for encouraging me to resurrect this work. CiteULike Connotea Del.icio.us What's this? (shrink)

I argue for three central theses: ‘intuition’ is ambiguous, in material object metaphysics ‘intuition’ refers to pre-theoretical beliefs, and these pre-theoretical beliefs are generated by an innate physical reasoning system. I begin by outlining the relevant background discussions on the nature of intuitions and their role in philosophy to motivate the need for a more careful investigation of the meaning of ‘intuition’ and the role of intuitions in specific sub-disciplines of philosophy. In chapters one and two I (...) argue that ‘intuition’ is ambiguous between an inflationary and deflationary sense. In the inflationary sense, ‘intuition’ refers to a priori intellectual seemings with a special phenomenology, conceptual etiology, and modal content. In the deflationary sense, ‘intuition’ refers to beliefs or inclinations to believe. In chapter three I specifically examine the use of intuitions in material object metaphysics and conclude that in this sub-community ‘intuition’ is used in the deflationary sense to refer to pre-theoretical beliefs. Drawing from research on infant cognition, in the final chapter I argue that intuitions regarding material object metaphysics are those judgments that arise from an innate physical reasoning system. Based on this empirical observation, I argue that metaphysicians ought to give preference to abstract intuitions over intuitions regarding concrete cases because these abstract intuitions reflect the innate structure of our physical reasoning mechanisms. (shrink)

Kant argued that Euclidean geometry is synthesized on the basis of an a priori intuition of space. This proposal inspired much behavioral research probing whether spatial navigation in humans and animals conforms to the predictions of Euclidean geometry. However, Euclidean geometry also includes concepts that transcend the perceptible, such as objects that are infinitely small or infinitely large, or statements of necessity and impossibility. We tested the hypothesis that certain aspects of nonperceptible Euclidian geometry map onto intuitions of (...) space that are present in all humans, even in the absence of formal mathematical education. Our tests probed intuitions of points, lines, and surfaces in participants from an indigene group in the Amazon, the Mundurucu, as well as adults and age-matched children controls from the United States and France and younger US children without education in geometry. The responses of Mundurucu adults and children converged with that of mathematically educated adults and children and revealed an intuitive understanding of essential properties of Euclidean geometry. For instance, on a surface described to them as perfectly planar, the Mundurucu's estimations of the internal angles of triangles added up to ∼180 degrees, and when asked explicitly, they stated that there exists one single parallel line to any given line through a given point. These intuitions were also partially in place in the group of younger US participants. We conclude that, during childhood, humans develop geometrical intuitions that spontaneously accord with the principles of Euclidean geometry, even in the absence of training in mathematics. (shrink)

In this paper I consider the possibility of a kind of a priori cognition that serves the purposes of metaphysics, given that metaphysics involves the search for modal knowledge. Necessary or, better, modal knowledge is a priori; so metaphysical knowledge is likewise a priori. Here I argue that intuition is the route to modal knowledge in metaphysics, and I insist that conceivability or knowledge of conceptual truths does not lead towards the modal realm of metaphysics.

In this thesis I seek to advance our understanding of what intuitions are. I argue that intuitions are experiences of a certain kind. In particular, they are experiences with representational content, and with a certain phenomenal character. -/- In Chapter 1 I identify our target and provide some important reliminaries. Intuitions are mental states, but which ones? Giving examples helps: a person has an intuition when it seems to her that torturing the innocent is wrong, or that if something (...) is red it is coloured. We can also provide an initial characterisation of the state by saying that it has representational content, often causes belief, and appears to justify belief. In addition, there is something it is like to have an intuition: intuition has a certain phenomenal character. -/- Some argue that intuition does not explain anything which cannot be explained by other mental states. One version of this view takes intuition to reduce to belief. In Chapter 2 I argue that this entails that agents are rationally criticisable in situations where we know they are not, and that such views are therefore untenable. A parallel argument shows that the corresponding approach to perception fails. This suggests a similarity in nature: both intuition and perception are experiences. -/- Others take intuition to reduce to a disposition to have a belief. In Chapter 3 I consider a line of argument against such views, find it unsuccessful, and present two new arguments. One is likely to be dialectically ineffective. The other suffers no such weakness: it shows that the proposed reduction fails. As before, the argument also applies to perception, and suggests that intuition and perception are both experiences. -/- In the remainder of the thesis I develop an account of intuition as an experience. I distinguish between content-specific and attitude-specific phenomenology, and argue that intuition lacks the former (Chapter 4), but has the latter (Chapter 5). This allows us to say what intuition is: it is is an experience with representational content and with attitude-specific phenomenology of a certain kind. -/- In Chapter 6 I put this account of intuition to use. When a person has a perceptual or intuitional experience, I argue that simply having the experience is what makes the subject justified in believing what the experience represents. Moreover, what explains that intuition and perception can justify belief in this way is precisely their phenomenal character. (shrink)

Today it is no news to point out that Kant’s doctrine of space as a form of intuition is motivated by epistemological considerations independent of his commitment to Euclidean geometry. These considerations surface—apparently without his own recognition—in Poincaré’s, Science and Hypothesis, the very work that helped turn analytically-minded philosophers away from the Critique. I argue that we should view Poincaré as refining Kant’s doctrine of space as the form of intuition, even as we see both views as arbitrarily (...) limited—in Kant’s case, to Euclidean transformations, and, in Poincaré's, to geometries of constant curvature. Both run together the question whether space is an a priori form of intuition with the question whether there are a priori constraints on its applied geometry. At his best, Kant sees—what Poincaré does not—that they are connected by a form of cognition consisting in the intuition of homogeneous pluralities, of totalities apprehended as unities. (shrink)

The topic of the paper is the notion of intuition in Descartes’ philosophy and its epistemic functions. Descartes introduces his notion of intuition in the context of a description of his method and process of knowing and doing science. Intuition is a significant component of this process. I intend to show that the main epistemic functions of intuition in Descartes’ philosophy are differentiated. Intuition is essential not only in the context of justification (the Cartesian synthetic (...) method of proof) but also and especially in the context of discovery (the Cartesian analytic method of discovery). It plays not only a role in the foundation of cogito but also on different stages of constructing the system of knowledge. Intuition has important functions in grasping simple natures, forming primary concepts, comprehending complex natures, forming primary propositions (including primary principles), and capturing relationships between them and building deductive reasoning (the role of intuition in deduction). Hence, intuition is the foundation for all primary stages of producing knowledge. It is active and important element of pure thinking (a priori) in human knowledge, and science. It fulfils these functions due to its specific epistemic properties. I also argue that intuition is not an autonomous and complete type of knowledge. Nor is it an intuitive thesis, but rather the basis of a justification for theses (including cogito). (shrink)

Many philosophers claim that intuitions are evidential. Yet it is hard to see how introspecting one's mental states could provide evidence for such synthetic truths as those concerning, for example, the abstract and the counterfactual. Such considerations have sometimes been taken to lead to mentalism---the view that philosophy must concern itself only with matters of concept application or other mind-dependent topics suited to a contemplative approach---but this provides us with a poor account of what it is that philosophers take themselves (...) to be doing, for many of them are concerned with the extra-mental facts about the universe. Evidentialism therefore gestates a disaster for philosophy, for it ultimately demands an epistemology for the investigation into such matter as the abstract and the modal that simply will not be forthcoming. We make a different suggestion: That intuitions are inclinations to believe. Hence, according to us, a philosophical argument does well, as a socio-rhetorical matter of fact, when it is founded on premises philosophers are generally inclined to believe, whether or not those inclinations to believe connect appropriately to the extra-mental facts. Accordingly, the role of intuitions (inclinations to believe) in philosophical methodology is non-evidential, and the question of how they could be used as evidence falls away. (shrink)

Michael Bergmann's Radical Skepticism and Epistemic Intuition develops a response to radical skepticism inspired by commonsense philosophers, such as Reid and Moore. Bergmann argues against radical skepticism on the grounds of its conflicting with strongly-held "epistemic intuitions" about the "epistemic value or goodness” of our particular perceptual, recollective, introspective and a priori beliefs. I press concerns about whether Bergmann's "intuitionist particularist" response can diagnose the source of skepticism, and argue that his methodology turns out to itself be strikingly (...) skeptical. (shrink)

In his Prolegomena to the History of the Concept of Time (1925), Heidegger develops what at first sight could be seen as a masterful presentation of the “three fundamental discoveries” of Husserl’s Phenomenology: intentionality, categorial intuition, and the new conception of the a priori. Nevertheless, closer examination of the text discloses a series of subtle but serious problems. Our interest here will be restricted to Heidegger’s presentation of his understanding of Husserl’s theory regarding the intentionality of perception and (...) of categorial intuition. In §6 of that work (48/64), we read that Husserl’s discovery of categorial intuition means two things. Firstly, it means that there is an experience of objectities in which we also have a simple apprehension of categorial constituents, i.e., of the elements which the tradition, in a “crude” fashion, called “categories” (48/64). Secondly, it means that this apprehension is already present in every experience and, as Heidegger explains a few lines later, according to what he has “already suggested” in his preceding analyses of the fundamental discovery of intentionality (in §5), categorial intuition is found even in every perception (48/64). Heidegger insists on this claim, and at several points of his presentation (see, e.g., §6.b.“), he repeats the idea that the intentional act of perception is, after all, permeated with categorial elements, with “categorial intuition.” Now, how should we understand this dense and heavy idea? Is it a hidden criticism of Husserl’s views on perception, or is it Heidegger’s sincere understanding of Husserl’s original discovery? The relevant literature seems to take Heidegger’s reading as a true depiction of Husserl’s theory of categorial intuition. However, as we will see, this reading of the latter theory is far from self-evident, a fact that also casts doubt on the corresponding stance regarding its actual motive. In this chapter, I plan to cast new light on the details of Husserl’s theory, and thus also on this fold of the philosophical relation between Husserl and Heidegger. (shrink)

According to Kant, the axioms of intuition, i.e. space and time, must provide an organization of the sensory experience. However, this first orderliness of empirical sensations seems to depend on a kind of faculty pertaining to subjectivity, rather than to the encounter of these same intuitions with the real properties of phenomena. Starting from an analysis of some very significant developments in mathematical and theoretical physics in the last decades, in which intuition played an important role, we argue (...) that nevertheless intuition comes into play in a fundamentally different way to that which Kant had foreseen: in the form of a formal or “categorical” yet not sensible intuition. We show further that the statement that our space is mathematically three-dimensional and locally Euclidean by no means follows from a supposed a priori nature of the sensible or subjective space as Kant claimed. In fact, the three-dimensional space can bear many different geometrical and topological structures, as particularly the mathematical results of Milnor, Smale, Thurston and Donaldson demonstrated. On the other hand, it has been stressed that even the phenomenological or perceptual space, and especially the visual system, carries a very rich geometrical organization whose structure is essentially non-Euclidean. Finally, we argue that in order to grasp the meaning of abstract geometric objects, as n-dimensional spaces, connections on a manifold, fiber spaces, module spaces, knotted spaces and so forth, where sensible intuition is essentially lacking and where therefore another type of mathematical idealization intervenes, we need to develop a new form of intuition. (shrink)

Naive realism in philosophy of perception is the view that (successful) perception involves a direct relation between perceiving subjects and the world. The naive realist says that your perception of a cat on the mat is a worldly relation which is partially constituted by the cat and the mat; a spatio-temporal chunk of the world is presenting itself to you. Recently, Elijah Chudnoff and John Bengson have independently developed an extension of this view to intellectual experiences, or intuitions, for traditionally (...) a priori domains. We argue that this view, which we call ‘Intuitional Naive Realism’ (INR), will not have the epistemic advantages that Chudnoff and Bengson claim that it does. In perception, but not intuition, there is a deeper explanation of what makes it the case that one experience is constituted by the world while another is not. Whether or not INR is true, then, it does no interesting epistemological work for traditionally a priori domains. (shrink)

Explaining intuitions in terms of "facts of our natural history" is compatible with rationally trusting them. This compatibilist view is defended in the present paper, focusing upon nomic and essentialist modal intuitions. The opposite, incompatibilist view alleges the following: If basic modal intuitions are due to our cognitive make-up or "imaginative habits" then the epistemologists are left with a mere non-rational feeling of compulsion on the side of the thinker. Intuitions then cannot inform us about modal reality. In contrast, the (...) paper argues that there are several independent sources of justification which make the feeling of compulsion rational: the prima-facie and a priori ones come from the obviousness of our basic modal intuitions and our not being able to imagine things otherwise, others, a posteriori, from the epistemic success of these intuitions. Further, the general scheme of evolutionary learning is reliable, reliability is preserved in the resulting individual's cognitive make-up, and we can come to know this a posteriori. The a posteriori appeal to evolution thus plays a subsidiary role in justification, filling the remaining gap and removing the residual doubt. Explaining modal intuitions is compatible with moderate realism about modality itself. (shrink)

Analytic philosophers have long used a priori methods to characterize folk concepts like knowledge, belief, and wrongness. Recently, researchers have begun to exploit social scientific methodologies to characterize such folk concepts. One line of work has explored folk intuitions on cases that are disputed within philosophy. A second approach, with potentially more radical implications, applies the methods of cross-cultural psychology to philosophical intuitions. Recent work suggests that people in different cultures have systematically different intuitions surrounding folk concepts like wrong, (...) knows, and refers. A third strand of research explores the emergence and character of folk concepts in children. These approaches to characterizing folk concepts provide important resources that will supplement, and perhaps sometimes displace, a priori approaches. (shrink)

It is alleged that the causal inertness of abstract objects and the causal conditions of certain naturalized epistemologies precludes the possibility of mathematical know- ledge. This paper rejects this alleged incompatibility, while also maintaining that the objects of mathematical beliefs are abstract objects, by incorporating a naturalistically acceptable account of ‘rational intuition.’ On this view, rational intuition consists in a non-inferential belief-forming process where the entertaining of propositions or certain contemplations results in true beliefs. This view is free (...) of any conditions incompatible with abstract objects, for the reason that it is not necessary that S stand in some causal relation to the entities in virtue of which p is true. Mathematical intuition is simply one kind of reliable process type, whose inputs are not abstract numbers, but rather, contemplations of abstract numbers. (shrink)

By way of a reply to Charles Parsons's paper in the Nagel Festschrift, Kant's notion of intuition (Anschauung) is examined. It is argued that for Kant the immediate relation which an intuition has to its object is a mere corollary to its singularity. It does not presuppose (as Parsons suggests) any presence of the object to the mind. This is shown, e.g., by the Prolegomena § 8, where the objects of intuitions a priori are denied by Kant (...) to be so present. They yield knowledge, not in virtue of their immediacy but in virtue of their ideality. (shrink)

This work investigates intuitions' nature, demonstrating how philosophers can best use them in epistemology. First, the author considers several paradigmatic thought experiments in epistemology that depict the appeal to intuition. He then argues that the nature of thought experiment-generated intuitions is not best explained by an a priori Platonism. Second, the book instead develops and argues for a thin conception of epistemic intuitions. The account maintains that intuition is neither a priori nor a posteriori but multi-dimensional. (...) It is an intentional but non-propositional mental state that is also non-conceptual and non-phenomenal in nature. Moreover, this state is individuated by its progenitor, namely, the relevant thought experiment. Third, the author provides an argument for the evidential status of intuitions based on the correct account of the nature of epistemic intuition. The suggestion is the fitting-ness approach: intuition alone has no epistemic status. Rather, intuition has evidentiary value as long as it fits well with other pieces into a whole, namely, the pertinent thought experiment. Finally, the book addresses the key challenges raised by supporters of anti-centrality, according to which philosophers do not regard intuition as central evidence in philosophy. To that end, the author responds to them, showing that they fail to affect the account of intuition developed in this book. This text appeals to students and researchers working in epistemology. (shrink)

What sorts of things are the intuitions generated via thought experiment? Timothy Williamson has responded to naturalistic skeptics by arguing that thought-experiment intuitions are judgments of ordinary counterfactuals. On this view, the intuition is naturalistically innocuous, but it has a contingent content and could be known at best a posteriori. We suggest an alternative to Williamson's account, according to which we apprehend thought-experiment intuitions through our grasp on truth in fiction. On our view, intuitions like the Gettier intuition (...) are necessarily true and knowable a priori. Our view, like Williamson's, avoids naturalistic skepticism. (shrink)

A la fin du XVIIIe siècle, Emmanuel Kant pouvait encore voir dans les mathématiques le modèle même des jugements synthétiques a priori, c'est-à-dire dotés d'un contenu intuitif propre quoique non dérivé de l'expérience sensible. Des géométries non-euclidiennes à la théorie des transfinis de Cantor, les mathématiques du XIXe siècle vont cependant faire triompher des systèmes mathématiques résolument déductifs et non plus intuitifs. Sur fond d'interrogations quant à la légitimité de ces développements récents, interrogations renforcées par la découverte de paradoxes, (...) d'âpres débats vont alors opposer différentes écoles quant aux méthodes de preuve acceptables ainsi que quant à ce qui constitue le fondement même du savoir mathématique. Logicisme, formalisme et intuitionnisme ; ce sont, à l'époque, pas moins de trois conceptions des mathématiques (et trois programmes pour les mathématiques) qui s'affrontent, conceptions auxquelles il faut ajouter le psychologisme, qui se nourrit de l'essor des sciences humaines et de leurs prétentions épistémologiques. En collant au plus près des textes des principaux protagonistes, l'ouvrage présente de manière tout à la fois synthétique et précise les différentes positions en présence, en soulignant autant que possible leurs divergences, mais en montrant aussi les variations et inflexions qui ont marqué leur développement durant la période 1870-1930. (shrink)

A large portion of philosophy done in the Western analytic tradition attempts to provide conceptual analyses which are tested by examples that elicit intuitions. These intuitions are, in turn, used as evidence either for or against a given analysis. In recent years, there has been much discussion of the uses of intuitions from empirically minded philosophers and psychologists. The basic strategy is to discover empirically how “normal” folks think about certain topics in philosophy. This application of folk intuitions to philosophy (...) branches into roughly two basic approaches. The first is an attempt to show that in given domains, folk intuitions are not very reliable sources of evidence; hence, we have good reason to think that philosophers' intuitions are also not reliable sources of evidence in that domain. The second approach attempts to determine what folk concepts are. Once folk concepts are analyzed, they are then argued to be relevant to philosophical debates. My guiding question for this dissertation is the following one: Why should philosophers care about folk intuitions? One answer is that we should want some philosophical analyses to be grounded in everyday concepts. I argue that there are presently no adequate a priori arguments for the reliability of philosophical intuitions in some philosophically relevant areas. Whether intuitions are reliable enough to ground philosophical analyses is an empirical question. I review four domains where ordinary concepts have been argued to ground philosophical theorizing: (1) epistemology, (2) ethics, (3) free will, and (4) action theory. I argue that the available evidence suggests that we should be skeptical of intuitions in philosophy—but that skepticism does not entail radical skepticism. That is, the empirical studies reveal a wide variety of results which on the surface indicate that intuitions are not reliable (e.g., order effects or framing effects). However, I argue that these seeming instabilities are actually the results of stable differences in different groups of people. Hence, I argue that intuitions are stable in a surprising way—that different groups of people have stable intuitions. This intuition stability, while not the kind of monolithic stability many philosophers might desire, is argued to be sufficient to ground philosophical analyses in these domains. (shrink)

Mathematical apriorists sometimes hold that our non-derived mathematical beliefs are warranted by mathematical intuition. Against this, Philip Kitcher has argued that if we had the experience of encountering mathematical experts who insisted that an intuition-produced belief was mistaken, this would undermine that belief. Since this would be a case of experience undermining the warrant provided by intuition, such warrant cannot be a priori.I argue that this leaves untouched a conception of intuition as merely an aspect (...) of our ordinary ability to reason. Thus the apriorist may still hold that some mathematical beliefs are warranted by intuition. (shrink)

Kant describes intellectual intuition as a kind of non-sensible intuition that creates its objects and provides knowledge of them as noumena. Although he precludes intellectual intuition from the human mind, Reinhold attributes it to the human mind. Pioneering research has already shown that Reinhold deviates from Kant in this way to explain the possibility of a priori self-cognition. It has also already shown that Fichte follows Reinhold by deviating from Kant in the same way. Yet, other (...) aspects of Reinhold’s doctrine of intellectual intuition remain largely overlooked. Among the few Reinhold scholars who study it, the extant view is that intellectual intuition does not yield cognition of an absolute knower, and that only Fichte makes this assertion. However, this view ignores Reinhold’s claim that I must attribute all my representations to an absolute knower to explain the unity of experience. In this paper, I argue that we must take this claim seriously, and I show that, for Reinhold, my cognition of myself as an absolute knower in intellectual intuition enables me to attribute all my representations to myself as such a knower, and he does so prior to Fichte. (shrink)

I use recent work on Kant and diagrammatic reasoning to develop a reconsideration of central aspects of Kant’s philosophy of geometry and its relation to spatial intuition. In particular, I reconsider in this light the relations between geometrical concepts and their schemata, and the relationship between pure and empirical intuition. I argue that diagrammatic interpretations of Kant’s theory of geometrical intuition can, at best, capture only part of what Kant’s conception involves and that, for example, they cannot (...) explain why Kant takes geometrical constructions in the style of Euclid to provide us with an a priori framework for physical space. I attempt, along the way, to shed new light on the relationship between Kant’s theory of space and the debate between Newton and Leibniz to which he was reacting, and also on the role of geometry and spatial intuition in the transcendental deduction of the categories. (shrink)

This paper is an exposition and defense of Kant’s philosophy of geometry. The main thesis is that Euclidean geometry investigates the properties of geometrical objects in an inner space that is given to us a priori (pure space) and hence is a priori and synthetic. This thesis is supported by arguing that Euclidean geometry requires certain intuitive objects (Sect. 1), that these objects are a priori constructions in pure space (Sect. 2), and finally that the role of (...) geometrical construction is to provide geometrical objects, not concepts, as some have claimed (Sect. 3). (shrink)

Barbara Vetter has argued that the notion of a metaphysical possibility functions like a natural-kind concept that picks out whatever kind is instantiated by the large majority of paradigmatic examples. Vetter holds that proponents of such a view can reject appeals to intuition and a priori reasoning as ways of supporting claims about the extension of metaphysical possibility, and that the attractiveness of a natural-kind account is consequently undiminished by intuitive counterexamples. This paper argues that that is far (...) from obvious. It may be true on a natural kind view that the claim that it is metaphysically possible that p can be established only on the basis of empirical evidence about which kind is instantiated by most paradigm examples and what the members of this kind are. However, that leaves open the possibility that intuition and a priori reasoning can be used to evaluate conditional claims of the following form: If the kind instantiated by most paradigm examples includes (fails to include) X, then it is possible (not possible) that p. If intuition and a priori considerations can be used in this manner, then they are relevant to the assessment of the natural-kind view. Keywords: modality, natural kinds, the a priori, intuition, potentiality. (shrink)

In the Transcendental Aesthetic of the Critique of Pure Reason, Immanuel Kant famously claims that we have an a priori intuition of space as an ‘infinite given magnitude’. Later on, in the Transcendental Analytic, he seems to add that the intuition of space presupposes a synthetic activity of the transcendental imagination. Several authors have recently pointed out that these two claims taken together give rise to two problems. First, it is unclear how the transcendental imagination of a (...) finite mind could ever result in the intuition of an entity that is infinitely large. Second, Kant claims that our intuition of space has a ‘whole-prior-to-its-parts’ structure, such that its parts are given only as limitations of the whole, while synthesis is compositional and has a ‘parts-prior-to-their-whole’ structure, because it consists in first running through and then taking together the parts of a sensible manifold. I will solve these two problems by showing that Kant thought that synthesis does not always have a compositional structure but that there is also a form of ‘decomposing’ synthesis, which has a whole-prior-to-its-parts structure. Building on similarities between Kant, Edmund Husserl and G. W. F. Hegel, I will argue that infinite space is given to us in intuition by precisely such an activity of decomposition, one that allows us to differentiate between finite spatial objects and the unlimited phenomenal horizon in which they appear. (shrink)

It is commonly held that our intuitive judgements about imaginary problem cases are justified a priori, if and when they are justified at all. In this paper I defend this view — ‘rationalism’ — against a recent objection by Timothy Williamson. I argue that his objection fails on multiple grounds, but the reasons why it fails are instructive. Williamson argues from a claim about the semantics of intuitive judgements, to a claim about their psychological underpinnings, to the denial of (...) rationalism. I argue that the psychological claim — that a capacity for mental simulation explains our intuitive judgements — does not, even if true, provide reasons to reject rationalism. (More generally, a simulation hypothesis, about any category of judgements, is very limited in its epistemological implications: it is pitched at a level of explanation that is insensitive to central epistemic distinctions.) I also argue that Williamson’s semantic claim — that intuitive judgements are judgements of counterfactuals — is mistaken; rather, I propose, they are a certain kind of metaphysical possibility judgement. Several other competing proposals are also examined and criticized. (shrink)

By transcendental aesthetic, Kant means “the science of all principles of a priori sensibility” (A 21/B 35). These, he argues, are the laws that properly direct our judgments of taste (B 35 – 36 fn.), i.e. our aesthetic judgments as we ordinarily understand that notion in the context of contemporary art. Thus the first part of the Critique of Pure Reason, entitled the Transcendental Aesthetic, enumerates the necessary presuppositions of, among other things, our ability to make empirical judgments about (...) particular works of art. These presuppositions are sensible rather than intellectual because on Kant's view, all intellection that considers objects of any kind, whether abstract or concrete, must at base connect to actual, material objects with which we come into direct contact; and this we can do only through sensibility (A 19/B 33). Thus the following discussion explores what Kant claims must be true of us in order to make the sorts of aesthetic judgments we make, rather than any particular class or quality of aesthetic judgments itself. On Kant's view, what must be true of us in order to make aesthetic judgments is not different from what must be true of us in order to make any other kind of judgment about empirical objects. This last point is worth emphasizing, in order to correct an interpretation of Kant's account of aesthetic judgment in the Critique of Judgment that wrongly reads Kant as claiming that aesthetic judgments do not have to satisfy the same basic requirements of judgment that any other kind of judgment also must satisfy, such as the synthetic subsumption of such objects under certain necessary and hard-wired concepts of understanding, the internal coherence of such judgments with other, non-aesthetic ones of a more abstract and comprehensive character, the unified consciousness within which such judgments are intelligibly made, and the like. Of course Kant recognizes the special character of aesthetic judgments and unpacks it in the... (shrink)

Our theoretical understanding of individual differences can be used as a tool to test and refine theory. Individual differences are useful because judgments, including philosophically relevant intuitions, are the predictable products of the fit between adaptive psychological mechanisms (e.g., heuristics, traits, skills, capacities) and task constraints. As an illustration of this method and its potential implications, our target article used a canonical, representative, and affectively charged judgment task to reveal a relationship between the heritable personality trait extraversion and some compatabilist (...) judgments. In the current Reply, we further clarify major theoretical implications of these data and outline potential opportunities and obstacles for this methodology. Discussion focuses on (1) the need for theoretically grounded a priori predictions; (2) the use of precise process level data and theory; (3) the possibility of convergent validity as personality is known to predict life experiences and outcomes; and (4) the fundamentally adaptive nature of cognition. (shrink)

If we are to obtain a priori mathematical knowledge by following proofs, then we have to be able to have a priori knowledge of the axioms. This chapter examines the major accounts of how such knowledge might be gained. It is argued that all these accounts fail.

By transcendental aesthetic, Kant means “the science of all principles of a priori sensibility” (A 21/B 35). 1 These, he argues, are the laws that properly direct our judgments of taste (B 35 – 36 fn.), i.e. our aesthetic judgments as we ordinarily understand that notion in the context of contemporary art. Thus the first part of the Critique of Pure Reason, entitled the Transcendental Aesthetic, enumerates the necessary presuppositions of, among other things, our ability to make empirical judgments (...) about particular works of art. These presuppositions are sensible rather than intellectual because on Kant’s view, all intellection that considers objects of any kind, whether abstract or concrete, must at base connect to actual, material objects with which we come into direct contact; and this we can do only through sensibility (A 19/B 33). Thus the following discussion explores what Kant claims must be true of us in order to make the sorts of aesthetic judgments we make, rather than any particular class or quality of aesthetic judgments itself. On Kant’s view, what must be true of us in order to make aesthetic judgments is not different from what must be true of us in order to make any other kind of judgment about empirical objects. (shrink)

In this two-part article series, I aim to demonstrate that a special category of desire – a state which is sought unconditionally, as an end (sought in and of itself) – is the only ultimate value that logical observers can conceive upon consideration of sufficient conceptual depth. In the first part, I attempt to demonstrate this through appealing to logical reason. In this second part, I subsequently introduce two thought experiments that collectively allow readers to test various purported ultimate values (...) against their moral intuition that the desire defined herein is the ultimate value and, ultimately, against their inability to conceive alternate conclusions which are logically consistent. Keywords: A Priori; Beings; Desire; Objectivity; Ultimate Value; Logicality; Morality; Moral-Rationalism; Purism; Moral-Realism; Realism. (shrink)

In this paper, I seek an account of the nature of epistemic intuition. Given the resources of Dual-Process Theory in Psychology, I argue that the intuitions of elite epistemologists, such as Fred Dretske, are not a priori, pre-theoretic, insights. Instead, they are a posteriori insights into the phenomena of knowledge, not the concept of knowledge. Dretske intuitions are technical, modal intuitions about hypothetical counterfactual cases using System II reflections. Such intuitions depended on thinking about the implications of laws (...) of nature in particular circumstances and were used to defend Dretske’s reliable indicator account of knowledge. That account suggested that one must have conclusive reasons when one has empirical knowledge that P. (shrink)

Even in the relatively recent literature on the issue of the philosophical relation between Husserl and Heidegger, some scholars recognize that despite a large number of very good accounts, the darkness surrounding the matter has not yet been totally lifted. In particular, we still lack a complete account of the exact influence that Husserl’s Phenomenology exerted on Heidegger’s project of a Fundamental Ontology. To use, e.g., Dahlstrom’s wording, until now, the available works on this subject “merely provide points of departure (...) for an explanation of the relation between the two phenomenologists” (Dahlstrom 2001, 142 n. 103; emphasis added). The situation is, of course, somewhat awkward, since Heidegger himself not only admitted his debt to Husserl’s philosophy, but also sometimes tried to guide us through the inner itineraries of this debt. In his Ontology: the Hermeneutics of Facticity (SS 1923), Heidegger admitted, in front of his students, that it was Husserl who gave him his philosophical eyes: “die Augen hat mir Husserl eingesetzt” (GA 63, 5). There are many occasions on which Heidegger thematizes his debt to Husserl’s Phenomenology. Two years later, in his Prolegomena to the History of the Concept of Time (SS 1925), he introduced his students to what he presented as the “three fundamental discoveries” of Husserl’s Phenomenology: intentionality, the doctrine of categorial intuition, and the phenomenological sense of the a priori, thereby publicly acknowledging his admiration for Husserl’s work. Both there and in BT, (1927) as well as in The Basic Problems of Phenomenology (SS 1927), Heidegger constantly acknowledges the decisive dependence of his philosophy on Husserl’s thinking. [...] All the available textual evidence, then, makes clear that Heidegger considered the doctrine of categorial intuition, developed in the sixth LI, as the most decisive influence from Husserl on his own thought (with intentionality and the phenomenological a priori following closely). Now, what precisely is the meaning of this influence? How might that Husserlian doctrine have helped Heidegger shape the way in which he treated the sole concern of his entire philosophical career, namely the question of Being (Seinsfrage)? (shrink)

According to orthodox views of philosophical methodology, when philosophers appeal to intuitions, they treat them as evidence for their contents. Call this “descriptive evidentialism.” Descriptive evidentialism is assumed both by those who defend the epistemic status of intuitions and by those, including many experimental philosophers, who criticize it. This article shows, however, that the idea that philosophers treat intuitions as evidence struggles to account for the way philosophers treat intuitions in a variety of philosophical contexts. In particular, it cannot account (...) for philosophers' treatment of a priori intuitions, for nonpropositional uses of intuition, and for philosophers' failure to use intuition to exclude the counterintuitive. The article concludes that alternatives to descriptive evidentialism (some of which are sketched) must be developed, and that much of the recent debate between traditionalists and skeptics from, for example, experimental philosophy is probably based on a false presupposition. (shrink)

In this paper, I argue that Sellars’s conceptualist reading of Kant, though less radical than more contemporary approaches (e. g., Brandom, McDowell), relies on a controversial account of the relations between the givenness of intuitions, the productive imagination and the power of judgment. I will discuss: 1) how Sellars reconsidered Kant’s account of intuition; and 2) the kind of conceptualism he argues for. I will raise two main claims. First, Sellars’s conceptualist reading of intuition overlooks the role of (...) space and time as givenness conditions. Second, Sellars’s account of the productive imagination disregards the complementary significance of the power of judgment in a priori synthesis, the role of which is to grant synthetic unity. My aim is to reconstruct a consistent dialogue between Sellars and Kant by discussing Sellars’s reading of a priori synthesis and comparing his views to Kant’s original aims. (shrink)